| On Demand Capacity Reservation | no fixed term
capacity reserved for a specific AZ
for disaster recovery, regulatory requirements, events |
| EC2 Instance | Virtual server in the cloud |
| EC2 Connectivity methods | AWS Management Console
Secure Shell (SSH)
EC2 Instance Connect
AWS Systems Manager |
| EC2 Elastic Load Balancing | Distributes traffic across multiple EC2 instances
monitors health of instances |
| EC2 Auto Scaling | Adds or replaces EC2 instances based on need |
| Amazon EC2 | Elastic Compute Cloud |
| Is EC2 considered serverless? | No |
| EC2 Pricing Options | On-Demand
Spot
Reserved Instances
Dedicated Hosts
Savings Plans |
| EC2 On-Demand Pricing | Billed per second of use |
| EC2 Spot Pricing | Use unused EC2 capacity |
| EC2 Reserved Instances Pricing | Reserve a specific instance for 1 or 3 years |
| EC2 Savings Plans Pricing | Commit to compute usage over multiple services for 1 or 3 years |
| EC2 Types of load balancers | Classic
Application
Gateway
Network |
| EC2 Real world usages | Host database
Host web Application |
| AWS Lamda | Serverless compute service
event driven |
| Lamda Pricing | Compute time
Request count
data transfer |
| Lambda user responsibilities | Application code |
| Lambda AWS responsibilities | servers
coding environment
language support |
| Lambda Always free | after free-usage tier expires, you have 1 million free calls a month |
| AWS Fargate | Serverless compute engine for containers |
| Amazon Lightsail | Compute service
Launch all resources for small projects |
| AWS Outposts | Hybrid
Run cloud services in your internal data centre |
| AWS Batch | Process large workloads in smaller batches |
| Types of Reserved Instances | Standard
Convertible |
| Standard Reserved Instance | Can modify: AZ, size, scope
Can't be exchanged
Can't change region |
| Convertible Reserved Instance | Can modify: AZ, size, scope
Can be exchanged for an instance with a different OS, instance family, tenancy
Can't change region |
| Classic Load Balancer | balances based on IP addresses and ports |
| Application Load Balancer | balances by managing traffic at application level |
| EC2 On Demand Capacity Reservation | no fixed term
capacity reserved for a specific AZ
for disaster recovery, regulatory requirements, events |
| EC2 virtual firewall | security group |
